Cooking-stove



R. D. GRANGER.

Cooking Stove.

Patented March 7, 18.46.

R. D. GRANGER, or ALBANY, NEW YORK.

COOKING-STOVE.

Specification of Letters Patent No. 4,394, dated March 7, 1846.

To all whom it may concern:

Be it known that I, RENssELAER D. GRANGER, of Albany, in the county ofAlbany and State of New York, have invented a new and ImprovedDouble-Oven Cooking- Stove; and I do hereby declare that the followingis a full, clear, and exact description of the same, reference being hadto the accompanying drawings, making part of this specification, inwhich Figure 1 represents an isometrical View and Fig. 2 a verticallongitudinal section.

The same letters refer to the same parts in both figures.

a is the upper oven placed upon a level with the fire-box b.

0, is the lower oven divided from the upper by the flue (Z (Z formed bythe upper plate of the lower, and the bottom plate of the upper oven.

6 is a pipe or flue placed in the hinder part of the upper oven a,forming a communication between the flue (Z d beneath the upper oven andthe flue f f above the same.

9 g is a diving fiue descending in front of the fire box and between itand the front plate of the stove, communicating with the flue h beneaththe lower oven 0.

2' is a broad curved flue, the horizontal section of which may be anoblong parallelogram, ellipse or any other convenient form,making acommunication between the flue h h beneath the bottom oven, and the flue(Z (Z above the same.

j is a tube passing from the front of the stove, (the end opposite thesmoke pipe being considered the front,)'through the diving flue g 9without communicating therewith into the fire chamber 1), and serving to'mitted at y.

introduce the draft of air necessary to support combustion. It entersbelow the grate m. is is a register placed upon or near the top of thestove in front intended also to introduce a draft of air from above uponthe fuel inthe firebox.

The operation of the stove is as follows: If it be intended to use theupper oven only the fire having been placed in the fire-box b the damperZ is opened and a draft ad- To cause the current of hot air to passunder the bottom of the upper oven, the damper Z and the register .j areclosed and the dampers m m and the register is opened. When the loweroven is to be used, the dampers Z and m are closed and the register jopened. The current of hot air then passes down the diving flue g g infront of the fire box,beneath the lower oven through the curved flue z,and thence by the flue 0 to the smoke pipe; as indicated by the arrowsupon the drawings. The object of curving the flue 2' is to promote agreater de gree of radiation in the oven and throw the V heated currentfarther forward beneath the upper. oven a.

I claim i 1. The curved flues in the rear of lower oven herein shown anddescribed serving to throw the heat somewhat backward upon the bottomplate of the upper oven.

2. I also claim combining with the two ovens, and their respective fluesthe upper and lower draft, J and K arranged and operating substantiallyas set forth.

RENSSELAER D. GRANGER. Witnesses:

AMos B. LITTLE, Z. G. ROBBINS.

